Study of Residual Stresses from Two Machining Protocols Using an Indentation Method
International Journal of Mechanical Engineering and Applications
Volume 1, Issue 4, October 2013, Pages: 87-92
Received: Aug. 19, 2013; Published: Sep. 30, 2013
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Authors
Felipe V. Díaz, Departamento de Ingeniería Electromecánica, Facultad Regional Rafaela, Universidad Tecnológica Nacional, Rafaela, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Claudio A. Mammana, Departamento de Ingeniería Electromecánica, Facultad Regional Rafaela, Universidad Tecnológica Nacional, Rafaela, Argentina
Armando P. Guidobono, División Metrología Dimensional, Centro Regional Rosario, Instituto Nacional de Tecnología Industrial, Rosario, Argentina
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Abstract
Although high-speed machining offers a number of advantages over conventional machining, it is possible that the residual stress distributions generated by the former can affect the service life of the processed components. In this paper, a newly developed micro-indent method is used to evaluate different residual stress states, which were introduced in samples of AA 7075-T6 aluminum alloy milled at low and high-speed. Different surfaces were generated by varying the cutting speed in one order of magnitude, from 100 m/min to 1000 m/min. Two machining protocols, which consist of using different machine tools, were evaluated. The results show that it is possible to generate and to evaluate very small residual stresses. Finally, the values and levels obtained for normal components were analyzed in function of mechanical and thermal effects that generated the residual stresses.
Keywords
Residual Stresses, Machining, Aluminum Alloy, Indentation Method
To cite this article
Felipe V. Díaz, Claudio A. Mammana, Armando P. Guidobono, Study of Residual Stresses from Two Machining Protocols Using an Indentation Method, International Journal of Mechanical Engineering and Applications. Vol. 1, No. 4, 2013, pp. 87-92. doi: 10.11648/j.ijmea.20130104.12
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